Revert overly-wide change in dependency chain. Now the new build step will only be enabled when ...

chrome/chrome_exe.gypi

Index: chrome/chrome_exe.gypi
===================================================================
--- chrome/chrome_exe.gypi	(revision 95883)
+++ chrome/chrome_exe.gypi	(working copy)
@@ -428,13 +428,21 @@
           ],
         }],
         ['OS=="win"', {
+          'conditions': [
+            ['optimize_with_syzygy==1', {
+              # With syzygy enabled there is an intermediate target which
+              # builds an initial version of chrome_dll, then optimizes it
+              # to its final location.  The optimization step also
+              # depends on chrome_exe, so here we depend on the initial
+              # chrome_dll.
+              'dependencies': ['chrome_dll_initial',]
+            }, {
+              'dependencies': ['chrome_dll',]
+            }],
+          ],
+        }],
+        ['OS=="win"', {
           'dependencies': [
-            # On Windows there is an intermediate target which builds an
-            # initial version of chrome_dll, then either optimizes it or
-            # copies to its final location.  The optimization step also
-            # depends on chrome_exe, so here we depend on the initial
-            # chrome_dll.
-            'chrome_dll_initial',
             'chrome_version_resources',
             'installer_util',
             'installer_util_strings',